2006_C350

I have a 2013 E350 with about 6,200 miles. Every time I start the car and begin moving forward, within the first 5-10 seconds the car makes a grinding/clicking noise from the front driver's side and you also feel some kind of notchy rattling in the foot area underneath the dash. This noise appears to be coming from the front left of the car and moves into the driver's side foot area. This can be duplicated every time you turn off the car and turn it back on. This only happens when you first start up the car and start moving. It is especially loud on cold starts and sometimes you hear a grinding noise.

Has anyone experienced this on a 2012 or 2013 E350?

You here it around the 5-9 second mark and here's the youtube link: